| 摘要 |
FIELD: measurement technology, aids counting events altering for short time capacitance of capacitor pickup. ^ SUBSTANCE: gear incorporates two univibrators connected by circuit of ring self-excited generator, two integrating links connected to inputs of analog comparator connected to microcontroller and digital indicator. Outputs of univibrators are connected correspondingly to inputs of integrating links. Time-setting circuit of one univibrator includes capacitor pickup and time-setting resistor. Time-setting circuit of another univibrator contains capacitor of reference capacitance and time-setting resistor. ^ EFFECT: measurement of continuously altering capacitance of capacitor and computation of frequency of change of capacitance. ^ 2 cl, 1 dwg |
